Struct HoloHash

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pub struct HoloHash<T>where
    T: HashType,
{ /* private fields */ }

Expand description

A HoloHash contains a vector of 36 bytes representing a 32-byte blake2b hash plus 4 bytes representing a DHT location. It also contains a zero-sized type which specifies what it is a hash of.

There is custom de/serialization implemented in [ser.rs]

Implementations§

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impl HoloHash<AnyLinkable>

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pub fn into_primitive(self) -> AnyLinkableHashPrimitive

Match on the primitive hash type represented by this composite hash type

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pub fn into_any_dht_hash(self) -> Option<HoloHash<AnyDht>>

Downcast to AnyDhtHash if this is not an external hash

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pub fn into_action_hash(self) -> Option<HoloHash<Action>>

If this hash represents an ActionHash, return it, else None

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pub fn into_entry_hash(self) -> Option<HoloHash<Entry>>

If this hash represents an EntryHash, return it, else None

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pub fn into_agent_pub_key(self) -> Option<HoloHash<Agent>>

If this hash represents an EntryHash which is actually an AgentPubKey, return it, else None.

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pub fn into_external_hash(self) -> Option<HoloHash<External>>

If this hash represents an ExternalHash, return it, else None

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impl HoloHash<AnyDht>

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pub fn into_primitive(self) -> AnyDhtHashPrimitive

Match on the primitive hash type represented by this composite hash type

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pub fn into_action_hash(self) -> Option<HoloHash<Action>>

If this hash represents an ActionHash, return it, else None

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pub fn into_entry_hash(self) -> Option<HoloHash<Entry>>

If this hash represents an EntryHash, return it, else None

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pub fn into_agent_pub_key(self) -> Option<HoloHash<Agent>>

If this hash represents an EntryHash which is actually an AgentPubKey, return it, else None.

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impl<T> HoloHash<T>
where T: HashType,

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pub fn try_from_raw_39(hash: Vec<u8>) -> Result<HoloHash<T>, HoloHashError>

Raw constructor: Create a HoloHash from 39 bytes, using the prefix bytes to determine the hash_type

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pub fn from_raw_39(hash: Vec<u8>) -> HoloHash<T>

Raw constructor: Create a HoloHash from 39 bytes, using the prefix bytes to determine the hash_type. Panics if hash_type does not match or hash is incorrect length.

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pub fn try_from_raw_36_and_type( bytes: Vec<u8>, hash_type: T, ) -> Result<HoloHash<T>, HoloHashError>

Use a precomputed hash + location byte array in vec form, along with a type, to construct a hash.

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pub fn from_raw_36_and_type(bytes: Vec<u8>, hash_type: T) -> HoloHash<T>

Use a precomputed hash + location byte array in vec form, along with a type, to construct a hash. Panics hash is incorrect length.

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pub fn hash_type(&self) -> &T

The HashType of this hash

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pub fn get_raw_39(&self) -> &[u8] ⓘ

Get the raw 39-byte Vec including the 3 byte prefix, base 32 bytes, and the 4 byte loc

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pub fn get_raw_36(&self) -> &[u8] ⓘ

Get 36-byte Vec which excludes the 3 byte prefix

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pub fn get_raw_32(&self) -> &[u8] ⓘ

Fetch just the core 32 bytes (without the 4 location bytes)

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pub fn get_loc(&self) -> u32

Fetch the holo dht location for this hash

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pub fn into_inner(self) -> Vec<u8> ⓘ

consume into the inner byte vector

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pub fn to_hex(&self) -> String

Get the hex representation of the hash bytes

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impl<T> HoloHash<T>
where T: HashType,

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pub fn from_raw_32_and_type(hash: Vec<u8>, hash_type: T) -> HoloHash<T>

Construct a HoloHash from a 32-byte hash. The 3 prefix bytes will be added based on the provided HashType, and the 4 location bytes will be computed.

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impl HoloHash
where P: PrimitiveHashType,

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pub fn from_raw_36(hash: Vec<u8>) -> HoloHash

Construct from 36 raw bytes, using the known PrimitiveHashType

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pub fn from_raw_32(hash: Vec<u8>) -> HoloHash

Construct a HoloHash from a prehashed raw 32-byte slice. The location bytes will be calculated.

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impl<T> HoloHash<T>
where T: HashTypeSync,

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pub fn with_data_sync<C>(content: &C) -> HoloHash<T>
where C: HashableContent<HashType = T>,

Synchronously hash a reference to the given content to produce a HoloHash If the content is larger than MAX_HASHABLE_CONTENT_LEN, this will panic!

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impl<T> HoloHash<T>
where T: HashTypeAsync,

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pub async fn with_data<C>(content: &C) -> HoloHash<T>
where C: HashableContent<HashType = T>,

Asynchronously hash a reference to the given content to produce a HoloHash

Trait Implementations§

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impl<T> AsRef<[u8]> for HoloHash<T>
where T: HashType,

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fn as_ref(&self) -> &[u8] ⓘ

Converts this type into a shared reference of the (usually inferred) input type.

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impl AsRef<HoloHash<Agent>> for VerifySignature

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fn as_ref(&self) -> &HoloHash<Agent>

Converts this type into a shared reference of the (usually inferred) input type.

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impl<T> AsRef<HoloHash<T>> for HoloHashB64<T>
where T: HashType,

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fn as_ref(&self) -> &HoloHash<T>

Converts this type into a shared reference of the (usually inferred) input type.

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impl<T> Clone for HoloHash<T>
where T: Clone + HashType,

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fn clone(&self) -> HoloHash<T>

Returns a duplicate of the value. Read more

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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more

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impl<T> Debug for HoloHash<T>
where T: HashType,

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fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter. Read more

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impl<'de, T> Deserialize<'de> for HoloHash<T>
where T: HashType,

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fn deserialize<D>( deserializer: D, ) -> Result<HoloHash<T>, <D as Deserializer<'de>>::Error>
where D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer. Read more

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impl<T> Display for HoloHash<T>
where T: HashType,

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fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter. Read more

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